Waist tightening device for photovoltaic glass silk-screen plate

The utility model discloses a photovoltaic glass silk-screen plate waist-tightening device, which comprises an adjusting ring, a waist-tightening device and a waist-tightening device, and is characterized in that the adjusting ring is provided with a forward-rotating screw hole and a backward-rotating screw hole which are coaxially distributed and are arranged in a back-to-back manner; the number of the adjusting rods is two, the adjusting rods comprise a forward-rotating screw rod and a backward-rotating screw rod, one end of the forward-rotating screw rod is connected with the forward-rotating screw hole in a matched mode, and one end of the backward-rotating screw rod is connected with the backward-rotating screw hole in a matched mode; and the two waist tightening claws are fixedly connected with the other end of the forward rotation screw rod and the other end of the reverse rotation screw rod respectively. According to the utility model, the frame of the screen plate can be retracted as required, an out